zCOSMOS is a large-redshift survey that is being undertaken in the COSMOS field using 600hr of observation with the VIMOS spectrograph on the 8m VLT. The survey is designed to characterize the environments of COSMOS galaxies from the 100kpc scales of galaxy groups up to the 100Mpc scale of the cosmic web and to produce diagnostic information on galaxies and active galactic nuclei. The zCOSMOS survey consists of two parts: (1) zCOSMOS-bright, ...